diff --git a/docs/help/testing.md b/docs/help/testing.md
index a0ab38f784..3ae2852d06 100644
--- a/docs/help/testing.md
+++ b/docs/help/testing.md
@@ -261,7 +261,7 @@ This is the “common models” run we expect to keep working:
 - OpenAI Codex: `openai-codex/gpt-5.3-codex` (optional: `openai-codex/gpt-5.3-codex-codex`)
 - Anthropic: `anthropic/claude-opus-4-6` (or `anthropic/claude-sonnet-4-5`)
 - Google (Gemini API): `google/gemini-3-pro-preview` and `google/gemini-3-flash-preview` (avoid older Gemini 2.x models)
-- Google (Antigravity): `google-antigravity/claude-opus-4-6-thinking` and `google-antigravity/gemini-3-flash`
+- Google (Antigravity): `google-antigravity/claude-opus-4-5-thinking` and `google-antigravity/gemini-3-flash`
 - Z.AI (GLM): `zai/glm-4.7`
 - MiniMax: `minimax/minimax-m2.1`
 
diff --git a/extensions/bluebubbles/src/channel.ts b/extensions/bluebubbles/src/channel.ts
index 74ea0b7598..3c136fb45f 100644
--- a/extensions/bluebubbles/src/channel.ts
+++ b/extensions/bluebubbles/src/channel.ts
@@ -309,12 +309,13 @@ export const bluebubblesPlugin: ChannelPlugin<ResolvedBlueBubblesAccount> = {
       return { ok: true, to: trimmed };
     },
     sendText: async ({ cfg, to, text, accountId, replyToId }) => {
+      const trimmedText = (text ?? "").trimStart();
       const rawReplyToId = typeof replyToId === "string" ? replyToId.trim() : "";
       // Resolve short ID (e.g., "5") to full UUID
       const replyToMessageGuid = rawReplyToId
         ? resolveBlueBubblesMessageId(rawReplyToId, { requireKnownShortId: true })
         : "";
-      const result = await sendMessageBlueBubbles(to, text, {
+      const result = await sendMessageBlueBubbles(to, trimmedText, {
         cfg: cfg,
         accountId: accountId ?? undefined,
         replyToMessageGuid: replyToMessageGuid || undefined,
diff --git a/extensions/bluebubbles/src/send.ts b/extensions/bluebubbles/src/send.ts
index 22e13bb3e3..1792d774bf 100644
--- a/extensions/bluebubbles/src/send.ts
+++ b/extensions/bluebubbles/src/send.ts
@@ -322,7 +322,7 @@ export async function sendMessageBlueBubbles(
   text: string,
   opts: BlueBubblesSendOpts = {},
 ): Promise<BlueBubblesSendResult> {
-  const trimmedText = text ?? "";
+  const trimmedText = (text ?? "").trimStart();
   if (!trimmedText.trim()) {
     throw new Error("BlueBubbles send requires text");
   }
diff --git a/extensions/google-antigravity-auth/index.ts b/extensions/google-antigravity-auth/index.ts
index 055cb15e00..ff0e42e324 100644
--- a/extensions/google-antigravity-auth/index.ts
+++ b/extensions/google-antigravity-auth/index.ts
@@ -18,7 +18,7 @@ const REDIRECT_URI = "http://localhost:51121/oauth-callback";
 const AUTH_URL = "https://accounts.google.com/o/oauth2/v2/auth";
 const TOKEN_URL = "https://oauth2.googleapis.com/token";
 const DEFAULT_PROJECT_ID = "rising-fact-p41fc";
-const DEFAULT_MODEL = "google-antigravity/claude-opus-4-6-thinking";
+const DEFAULT_MODEL = "google-antigravity/claude-opus-4-5-thinking";
 
 const SCOPES = [
   "https://www.googleapis.com/auth/cloud-platform",